Power-press.



E. W. ZEH.

POWER PRESS.

APPLICATION FILED DEC.3I. 1914.

' Patented Aug. 31, 1915.

3- SHEETS-SHEEI l.

INVENIDR:

1M BY E. w. ZE H. POWER PRESS.

APPLICATION FILED DEC-31.1914.

Patented A g. 31-, 1915.

d S H E E TS I WJESSES:

power presses in which a head fo r carrfiy ini the upper dieis moved up and down' jb OFFIC EDMUND W. zen, or NEWARK, use? anus-E1 To all whom it may concern Be it knownthat I, EDMUND W. Zita, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain 1111 provements in Power-Presses, of which the following is a specification. This invention relates to. that class;

a screw, said screw'being rotated bya fri tion Wheel at its upper end adapts to. be driven in one direction or the other posite drive disks. I

Tl1e objects of the invention are to provide an improved press of this character; to secure improved means for shifting the drive disks into and out of engagement, With the friction Wheel; to avoid as far as possible reciprocating pal-ts in the shifting mechanism; to provide a control rod to shift the drive disks-by a rotary movement: to adapt this control rod to be'operated either by foot treadle or by hand independent of the foot operating means the operation in either caseshiftine; the drive disks to cause the head to be. lowered; to provide improved foot operating means for starting the press; to automatically rotate said control rod as the head approaches its lower position, so as to shift the drive disks and cause the head to be raised; to obtain improved means for automatically stopping the hammer at the end of its upstroke Without undue oscillation; to makesaid means readily adjustable; to provide means for causing continuous, operation of ,the machine When so desired; to provide means for quickly changing'from such continuous operation to single'blows, so" that the hammer will become stationary at the end its up stroke; to provide means for adjusting' the fixed positions of the drivedisks upon their shaft; to automatically dislodge or knock the Work from the loiver die after being stamped; to provide such dislodging, or knock-out means which will not --inte'rfere with placing a fresh blank upon the die; to secure simplicity of construction and op- 50 eration, and to obtain'other advantages and .results as may be brought .out in the fol lowing.- description. I

litifilllll l' to the accompanying drawings,

in which like numerals of reference indicate" the same parts tl'iroughout thegjseveral views, l igure l. is aperspeeti v .vi v of my; improved power press J.l 'lll?q361lrl0l1 w th sownnrrnhss.

Specification of Lettrs Eatent. PatgntgdXAqg, 31 1915,, Application filed recema r'si. 1914. Seria1No.87 9,845

tical plane from front .toback and SllOW-- ing certain-starting mechanism Fig. 3 is a rear view of said startingfmeohanisin; Fig.

is a detail pc-ir'spectivevie jiofthe friction ti'on taken on a plane adjustable mounting. I In the specific einb o tion illustrated i cates the frame of m erably mounted upon legs 2, 2 to elevate itrrtfof theinvena wings, l ind1- to asuitable and convenient height. 1 Said frame 1 is centrally open, providing yertical slideway for a head or hammer 3 carend a die not shown, and the frame 1 forms at the bottom of its central opening a bed 6 to receive the Work uponv a lower die 7 adapted to cooperate with the other die on the hammer. In order to raise and lower the head or hammer to secure the necessary pressure or impact otthe dies, the screw dis alternately rotated in opposite directions by the following means. i

iUQOVB the friction wheel?) a horizontal shaft 8 extends diametrically of said Wheel,

raved press, pref "centr l'v'ertical secand is iournaled in brackets. 9,-10'bolted tom andprojectingbp'wardfrom the frame 1 at' opposite sides of the machine, This shaft is provided at one end outside the bracket 9 with fast and loose pulleys 1-1 and 12 adapted torreceive. a driving belt, (not shown) and Which belt can be moved from one pulley or the other by a belt. shi'fter 13. Between the bearings of said sh ft in the brackets 9, 10 a pair of drive di its 1 its apd' 15 are mounted fast upon said, shaft The shaft 8 is slidablein its bearings; how'- even whereby either of the disks may be hr u sgsu. Lute engagement with the horizon tal wheel to rotate the same and raise or lower the screw as 1S customary in the art. Outside of one ofgthe brackets supporting the shaft 8, and here shown between the bracket 9' and the driving pulleys 11, 12, twocollar-s 16, 16 are made fast upon the shaft 8 By set screws or the like, and between said collars is a sleeve 17 rotatably loose upon the shaft and having trunnions 18 received by the forked end 19 of a lever 20 which is fast ;upon a transverse rock shaft 21 rotatably mounted in an arm 22 of the bracket 10, so"

control rod .25 vertically disposed at. the

, front of the frame 1 and atone side of the central opening of said-frame, said crank being fast with respect to the control rod so that the drive disks may be shifted by rotating the control rod: At its lower end, fthe control rod 25, passes through the flaring base of the frame 1, which provides'thereat a lower bearing 26, and at itstop the con- 27, if desired, and thereby prevent the 0on trol rod from dropping down, Near the the bed 6 rotatably fast upon said control quate leverage when grasped at its free end; 7 to rotate the control rod 25 andshift the I both drivin wheel 5 trol rod is mountedin an upper. bearing 27 in alinementwith said lower bearing. The crank 24 on the upper end of'the control rod may' rest upon the top of the upper bearing lower end-ofi-the control rod2d and prefer-- ably above its lower bearing,' ism hand lever-28 extending-horizontally in front of rod and ofa length suflicient to afford adedrive disks. Preferably, this, leverlies transversely of the press, close to its base bed, andwhen both of-the' drive disksl i', 15 are out of-engagement from the horizontal wheelb said lever lies? at its middle or neutral position. From this neutral position the lever may be swung inward to cause the screw. to be lowered,-or ma swung outward from this neutral. positionto cause the screw to be elevated, it being understood that returning the lever to and retaining itfin' itsmiddle position will throw disks 14,15 off the friction the drivin'gldisks 14, 15'are rotated with their t advancing toward the front as ind1ca-by the arrow in Fig. 1, and the.

screw, inhaling a left hand thread, the disk 15 nearesttlie; right hahdside of the ma-.

chine, that is, nearest the shifting lever 20,.

becomes the lowering disk and the other disk 14 the elevating or raising disk. preferably provided for normally pressing or shifting the raising disk 15 toward the friction .wheel 5, so that unless said disk is positively'held out of engagement therefrom thehammer will be raised. 'ljlgemeans here shown, and more parti'cula lyTiescribed and claimedinfmy application erial No, 807,327,

filed December 17, 1913, include a spring 30.

actinga'gainst-the end of the shaft 8 opposite fromthe driving ulleys to slide said ut obviously other shaft longitudinally, 1 meansma-y'be substituted if desired without departing from the s irit andflscope of the 'ipresent invention. 11 any event, it is preferableto make it necessary to positively swing ,the operating lever. 28 'fromneutral to inward. :position and retain it in such shifted position aslong as it is desired to Means are maintain the lowering disk 15 in contact hammer-. As soon as the operating lever is ,released, the spring 30 will swing it toits -'outer'posit ion and slide the raising disk 14 with the horizontal ,wheel 5"to]lower' the into engagement-with the horizontal wheel,

thus causing the hammer to rise.

,To' terminate upward movement of the hammer, screw and friction wheel 5', I provide a brake 31 above said, wheel 5 and shown in the drawings 'as comprising a brake arm 32 having a transverse sleeve- 33 intermediate of the ends of said arm for 3 supporting the brake upon the driving shaft 8, see Figs; 1 and 4. It is to'be understood.

that said sleeve 33 is rotatably. loose upon the shaft 8 so the brake is notrevolved with the'shaft, and that the brakearm extends from front to back of the press 'substantiall y horizontal. Preferably said -fisleeve .33; 1a mounted upon the shaft 8 adjacent the low 1 ering disk 15 and-a second sleeve 34" in v.ali'n'ement with the first-mentioned sleeve 33' is positioned adjacent the raising disk 14, "both of said sleeves being upon the shaft 8. between the driving disks and a suitable branch arm-29 integral with the brake arm '32 holding said sleeves 33, 34' properly spaced .adjacent the respective driving disks, so as to prevent' any material movement of the bra e longitudinally of the drivingshaft. brake shoe 35 of woodor anyother suitable material mounted on the rear end OftllG brake arm 32 forms the'engagin face of the-brake, and it will be-understoo that the brake is so' laced that as the friction bviously the entire range of 2 movement of the lever 28 is small. I

- In operation of the construction shown,

whe'el'5 is rotate and mounts upwardly, the upper surfaceof said wheel 5, preferably adjacent to the periphery thereof, rubs against the said brake shoe 35. and the wheel 1 l is, thereby stopped. Preferably the free swinging end of the brake arm=32, away from thebrake shoe 35, is connected by a depending link 36. to an arm 37 fast up'on the outer end of the transverse rock shaft4, and which arm 37 extends partlally across and the rock, shaft 21 rotated to swing the shiftinglever 20 to disengage the raising drive-disk 14 from the friction-wheel. Said link 36 has its lower end threadedand BX- tending loosely through an appropriate hole in saidrock shaft arm 37 nuts 38, 39 on the threaded rod above and below said 'arm providing for adjustment as to length of the link. It will be obvious, therefore, that the return of the friction wheel 5 to initial or raised position automatically disengages the middle or neutral position raising dish 14from operative contact there-v with, and this of course turns the control rod 25 and throws the hand lever 28 into In ordinary operation of th. press, the horizontal wheel o isnot stopped suddenly, beczgse of its momentum, and this causes the dr ve (l1Sl S-'- to slide pasttheir idle or disengpiged posi tion, so that the lowering drive, isk -15 is brought into engagement with the friction wheel thus causing the head or hammer 3 to start downward again. The brake is thereby released from the friction wheel 5 and the spring 30 immediately acts to press the raising disk 15 against the friction wheel 5 and reverse its niation again, and by the time the friction wheel engages the brake a second time its momentum is diminished enough so that the raising and lowering disks 14, 14 both remain in idle position out of operative engagement with the friction wheel 5.

In order to give the sliding head or ham-' mer a downward stroke, therefore, it is only necessary to swing the operating lever 28 inward, and when released the spring 30 causes an a ard return of the head or hamincrf'throwing the lever 28 to its outer position. Means are'preferably provided, howm'cr, for automatically swinging said lever 28 to its outer position as soon as the hammer has completed its blow and then reversing the drive/on th friction wheel to cause the same to rise. To this end a lug 40 projects from the front of the mmer having its outer end tapered orsloping out- 'ardly upward, and an adjustable log 41' wardly inward so as to coact with the tapered outer end of the lug to readily turn positioned at the proper elevation upon or rotate thecontrol rotl. It will be under stood that the dog-41 may be loosened-and shifted up or down on the control rod 2:)

so as to adjust the length of stroke of the hammer to accommodate the Work or. dies being used.

As so far described, the machine is started by lever-28, requiring one hand of the operator to hold the same inward against the reactionof the spring 30 and keep the lowering disk 15 in engagement with the friction wheel 5 to propel the hammer or head-,3 downward. In order to leave both of the operators hands free, however, I provide a; t-readle attachment so arranged that either it or the lever 28 can be used, as desired. To this end a slide bar 43 extends transversely throughthe bed '6 from front to back of the Presslpreferably at one side of the center, and receives the operating lever 28 between bifurcations or fingers 44, 44 at the front end of the bar, lying above and below s'aid lever and connected therewith by means of a pin 45'. extending vertically V j through said fingers and lever. The fingers receive said pin in'slots 46, 46 extending longitudinally of the slidebar, so that the lever may be swung inward or outward from neu-- tral position independent. of the slide bar.

Preferably the slide bar is resiliently impelled toward its rearward position, so as to swing the operating lever 28 toward the press and thereby cause the hammer to be lowered, and to this end the slide-bar extends through a suitable recess 47 in the base 6 of the press and receives upon itself a helical spring 48 bearing at its'rear end against a collar 49 fixed upon the slide bar and at its forward end against a fixed portlonof the base,'a asher 50 being shown upon the' slide bar between the end of the I sprlng and the base. Obviously any-degree,"

of compression of the springmay be secured by shifting the collar' 49 upon the, slide bar, and preferably the spring 48 when compressed is stronger than the s ring 30 on the drive shaft 8, whereby w en both springs are acting to shift the shaft 8, the

spring 30 on the shaft. will be overcome and the-lowering disk slid into engagement with the'friction wheel. It is within the scope of'the present invention to provide other I means or arrangements "of'parts' than the spr ng] 48 for'resiliently tending to slide said, bar43,ifdesired, the one shown being merely illustrative. 1

Atits rearwardly projecting end, the slide harms is provided with a lateral stop which 1 cos rearwardly and is adapted to engage I a detentto hold the bar forward against the power ofiits spring- 48 and prevent the same from drawing the lever 28; inward to tart the press. At the same time, said lever can be thrown inward manually by virtue of the slots 46, 4t. Zireadle means are provided for-{releasing the detent, and aspring for I returning it to locking position, and furthermore the engaging portionsof the stop and detent are one or both beveled attheir opposite sides so that they will ass in to locked engagement when the escending hammer automatically swin s the lever 28 outward drawing the slide ar 43 with it. The press can therefore bestarted by operating, the treadle to release the detent,

whereupon the spring 48 forces said bar rearward and'swings' the lever 28; the detent returns toposition as soon as pressure onthe treadle is released, and thus is ready to lock the slide bar 43 in forward position after the'blow is struck, preventing a sec- 0nd blow. 1

The stop and detent may be of anyv suitable construction, but I have shown the rear end of the slide bar 43 screw-threaded as at'51, to receive an annular'stop 52 which vmay be screwed on or ofi said slide bar to any desired position, see Fig. 2. A look nut 53 isprovided which will fix the stop upon the slide bar inadjusted position, 'sald lock nut being small enough to leave a marginal portion'of the detent exposed, and the o pos te side of the stophas its edge bevele as at 54. The detent 55- slides vertically in a suitable slide plate 56 secured to the back of the bed 6 belowthe slide bar 43, and is limited inits upward movement-by a transverselyprojecting pin or key 57 adapted to engage the bottom of the slide plate when the detentis raised as far as desired, it be- 'ing understood that the detent extends below the slide platei To the lower end of the detent is connected a treadle 58, see Fig. 1),

positioned and adapted to recelve the o 1 erators foot, and on the rod 59 hereln shown connecting said lower end of the detent to the treadle is a spring 60 bearing at its upper end against a collar 61 fixed on the rod and at its other end bearing against a transverse shoulder 62 upon the lower end of a depending bracket 63 fixed to a stationary portion of the press as bybolting the same to the slide plate 56 as shown.

This spring is made strong enough and held under suflicientcompression to retain the lllS foot, allowing the slide bar 43 to move rearwardly, after which he may removehis foot from the treadle. Rearward movement of the slide bar 43 draws the o crating lever 28 inward, rotates the controFrod 25 and I on the frame, as by bolting at 66, see and is transversely cut or separated at a a the cam may be swun causes the lowering disk 15 to enga eand rotate the friction wheel 5- thereby owering the hammer 3. As the hammer approaches its lowered position, the lug ,40

thereon engages and swings the (10% 41 on;

the control rod, thereby rotating t trol rod and the operating lever 28 to outer position. As the operating lever is swung' outward, however, it draws the slide bar to its forward position and the. stop 52 is engaged again by the detent 55 to hold the slide bar from being moved rearwardly again under the action of its spring 48. Ob-

viously this action takes place while the lug 40 and dog 41 are in enga ement, and

as the operating lever is rotate from inner tactwith' the friction wheel and held there under action of the spring 30 on the shaft 8 thereby causin the hammer to rise unt' the brake 31 1s engaged by the friction wheel and the driving disks and operating.

lever returned tovneutral position, as he's been described. 5

Means are preferably provided for adapting the press to run continuously,- that is, so

the-direction of movement of the hammer is I reversed at the upper end of its slideway and the hammer caused to descend imme v diately. This continuous operation may be obtained in any .desired manner, but in the drawings I have shown means comprising a friction drum or disk .64 non-rotatably secured to the lower end of the control rod 25,

below the base 3 of the frame, with a brake band 65 encirclingthe periphery thereof and adapted to frictionally resist rotation of said drum. Said band is suitably sup orted ig. 6,

convenient peripheral point, as at 67, radial ears 68, GSJbeing formed upon the adjacent ends at said cut. Extending-through said ears in a direction transverse to the cut and tangent to theband, is a bolt 69'provided at one end-Withadjusting nuts 70, 70, and at the other endhaving a handled cam 71 pivoted therein, it being understood that the adjusting nuts and the-cam are positioned upon opposite sides of the ears ltfi, 68. The nuts may be adjusted upon thebolt, so that in one-direction to contract the brake'ban engagement with thedrum-64, and in the other direction to allow the brake band to and cause frictional drum, Withthe cam swung was to cause frictional engagement of the band with the. drum, the control rod will be held in an position to which it is. turned, that is, en

cient frictional resistance is created tocoun-fl teract the spring 30 u on the driveshaft's,

so that in operation 0 the presses the proaches its lowest position, so that. the

drive disks will then'operate to raise the hammer again, and so on. l urtnermore, the

detent 55 engages the stop and the slide bar 43 remains stationary, the slots 46, 46 therein allowing the operating lever 28 and control rod25 to move to their opposite extreme positions independent of the foot treadle mechanism.

Any time the operator wishes to stop the machine he may swing the operating lever 28 to its neutral position by hand, thus throwing the drive disks out of engagement with the friction wheel at any period of the stroke of the hammer desired. If he desires to stopthe machine at the upper end pf the stroke of the hammer, and discontinue the continuous or automatic operation thereof, he may throw the handled cam 71 torelease the frictional contact of the brake band and drum, so that the spring 30 upon the drive so shatt will swing the operating lever 28 into neutral position when the hammer is up.

By the construction thus described, it will be obvious thatmy improved press can be operated in almost any desired manner, so as to most conveniently and expeditiously perform *arious-kinds of work and lend itself to the rapid production of all kinds of stamped articles. p

The blow delivered by t e hammer stamps the blank into the lower die, and in order to remove the work therefrom I provide re 'ng or knock-out means next to be ded and best shown in Fig. 5 of the wings. The lower die is provided at its enter with a vertically disposed plunger )1 0 7:2 having a head 73, the top of which forms a portion or the engraved upper face of the die. Said headis larger than the remaining portion or stem of the plungerand the die s correspondingly recessed so that a suitable shoulder is formed to retain; the head 73 in proper-position as the blank is stamped. but allowing the plungerto be raised after the stamping operation so as to dislodge the work. The stem of theplunger depends into an enlarged recess 74 at the base of the the, and overlies the upper end of a vertically disposed rod or lrnocker 75f which is slidable through the base or bed 6 of the press and is pivoted at its lower end to a lover T6 intermediate the ends thereof.

- The said lever 76 preferably pivoted in a suitable bracket 77', bolted or otherwise secured to the under side of the base of the press at the front thereof, and extendsrearwardly substantially horizontal with its other end pivot-allyconnected to an upwardly extending trip rod 78, arranged at the rear of the press; The upper end 79 of this rod is bent or inclined away from the press at a suitable angle, shown in the drawings as about forty-five degrees, and said end slides through a suitable guide 80 to the frame of the press. I have shownsuch guide a fork with its arms 81 lying on opposite sides of the inclined end 79 transverse thereto and receiving a transverse pin 82 outside the rod to prevent its escape; the bottom of the recess between the arms forms the other side of the slideway for the bent end, being preferably parallel to said bent end. Any other suitable construction can be employed however, so long as it insures that when the trip rod is slid upward its upper end also moves 'la-terally outward from the press and when it is slid downward its upper part moves laterally inward toward the press.

At a suitable pointon the trip rod 78 is pivoted a trip which normally projects laterally therefrom toward the press and is adapted to be engaged by a finger 83 on the hammer as said hammer moves upward, said parts being arranged so that the finger will pass the trip idly as the hammer moves (1 wnward. The purpose of this construction .is to have the hammer as it starts upward after delivering a blow engage the trip upon the trip rod and raise said trip rod so to operate the knock-out means for clislodging the piece of work from the lower die; as the trip rod is raised however its upper part "swings outward as above described so that the trip and finger on' the hammer disengage, allowing the hammer to move on upward, while the trip rod and knock-out means drop back to normal lowered position.

"The particular form of trip which I have shown comprises a tubular body 841 pivoted on the rod by cross-pin 85 and havihg ailip SOprojecting toward the press or hammer:

The side wall of said tubular body is otted below said lip 86 as at 87 and suitably recessed outside the trip rod above the pin 85, as at. 88 so as to'allow the tripto swing outs ward, and a-spring '89 is provided to normally hold the trip against such swinging. When the hammer moves upwardits finger 83 engages the lip 86 and carries the trip rod with it until they are disengaged by lateral movement of the trip rod, but when the ha mer goes down the trip swings idly outira under the impact of the finger 83, as wiil be understood. Obviously any other desired.

A suitable stop is provided, here shown as a stirrup 90. depending from the base 6 of the press, "to limit downward movement of the knock-out mechanism and insure the suitable form of trip could be employed if v shaft 8 and hub 91 of the drive disk provide trip being in proper position to be. engaged by the hammer on its up-stroke. I Obviously by the knock-out means which I'h ave described,.'a piece of work may be removed from the die as the hammer rises, but s a'id removing means 18 returned to normal idle.

position before the hammer reaches the upper end of its stroke, so. that there .is notliff ing to interfere with placing another blank upon the lower die tOg-I'GCBIVG its impression as the hammer again descends. It will be understood that wear b'etwee the surface of the drive disks and the periphery of the friction wheel 5 necessitates an occasional adjustment of said'drive p disks upon the shaft 8 in order to act properly and for this purpose I have shown the means illustrated in deta l in F 1g. 8. The

a keyway adapted to receive aikey 92 against which a set screw; 93 carried by said hub is adapted to be grasped when the drive disk is brought'into position longitudinally of the shaft. Obviously there will be no strain upon the drive disk to slide i t; ji\ ard the friction wheel 5, and to resist itsiriovement in the other direction, the shaft is threaded as at 94: and provided with a nut 95 and lock-nut 96 which can obviously be set wherever desired within the limits of the threaded portion 94. This provides a sim-:

ple and effective means of holding the drive disk rigidly upon the shaft 8 and yet enabling it to be adjusted as desired.

Obviously detail modifications may he made in manufacturing my improved press without departing from the spirit and scope of the invention, and I do not wish to beunderstood as restricting myself except as required by the following claims when construed in the light of the prior art.

Having thus described the invention, what I claim is 1. In a press, ,a frame, 1e screw mounted in said frame, a friction wheel on said screw, drive disks adapted to engage the edge of said. friction wheel, a rotatable control rod,

means connecting said drive disks with said control rod whereby they are shifted into the friction wheel, and manually operated means for turning the control rod in oppo-- sitionto said resilient means.

3. In a press, a frame, a screw mounted in said frame, a friction wheel on said screw, drive disks adapted to-engage the edge of said friction wheel, a rotatable control rod means connecting said drive disks with said control rod whereby they are shifted into and out} of engagement with the friction wheel by turning the control rod, means for "automatically forcing the raising disk against the friction wheel, means for manually turning said control rod to press the lowering disk against the friction wheel, and means for automatically disengaging said lowering disk on the downward movement of the screw. I

4. 'In a press, a frame, a'hammer, a screw mounted in said frame, for; raising and lowering said hammer, a friction wheel on said screw, dri-ve disks adapted to engage the edge of said friction wheel, a rotatable control rod, means, connecting said drive disks with said control rod whereby they are shifted intoand out of engagement with the friction "wheel by turning the control rod, means for automatically Iforcing the raising disk against the friction wheel, means for manually turning the control rod to press the lowering disk against the fri'c 'tion wheel, a dog on said control rod, and

a lug on the hammer adapted to engage said dog to turn the control rod on the down stroke of the hammer.

5. In a press, a frame, a screwmounted in said frame, a friction Wheel on said screw, drive disks adapted to engage the edge of said friction wheel, a rotatable control rod, means con ecting said drive disks with said control rod whereby they are shifted into and out of engagement with the friction wheel by turning the control rod, means for turning said control rod to force the l'ower-- ing' disk against the friction wheel when the screw is raised, and,means for auto- -matically forcing the raising disk against lots the friction wheel when the screw is lowered.

6. In a press, a frame, a screw mounted in said frame, a friction wheel fast on said screw and movable therewith, a shaft extending diametrically of said friction wheel adjacent its uppermost position, drive disks on said. shaft adapted toengage the edge of said friction wheel, a lever for shifting said drive disk shaft longitudinallyto throw said disks into and out of engagement with the friction wheel, a rotatable control rod, a

crank arm on said rod, means connecting said crank arm to said shifting lever, and means for turning said control rod.

7. In a press, a frame, a screw mounted in said frame, a' friction wheel fast on said screw and movable therewith, a shaft extending diametrically of said friction wheel adjacent its uppermost position, drive disks on said shaft adapted to engage the edge of said friction wheel, a lever for shifting said drive disk shaft longitudinally to throw said disks into and out of engagement with the friction wheel, a control rod pivotally mounted at the front of the frame in upper and lower bearings thereon, a crank arm on said control rod above its upper bearing, means connectingsaid crank arm to said shiftinglever, and an operating lever on said control rod at the base of the PIGSS' S. In a press, a frame, a screw mounted in said frame, a friction wheel fast on said screw and movable therewith, a shaft eX- tending diametrically of said friction wheel adjacent its uppermost positiomdrive disks on said shaft adapted to engage the, edge of said friction wheel, a lever for shifting said drive disk shaft longitudinally to throw said disks into and out of engagement with the friction wheel, a brake arm fulcrumed on said drive disk shaft, a brake at the end of said arm on one side of the shaft, means connecting the end of the arm on the other side of the shaft with said shifting lever, whereby the raising disk is disengaged from the friction wheel when the screw rises, and means for throwing said raising disk into engagement with the friction wheel on the downward movement -of the screw.

9. In a press,'a frame, ascrew mounted in said framepa friction wheel fast on said screw and movable therewith, a shaft'extending diametrically of said friction wheel adjacent its uppermost position, .drive disks on said shaft adapted to engage theedge of said friction wheel, a lever for shifting said drive disk shaft longitudinally to throw said disks into and out {of engagement with the friction wheel, a brake arm fulcrumedon said drive disk shaft adjacent one of the drive disks, a brake at the end of said arm 40 on one side of the shaft, a secondary arm extending from said brake to the shaft adjacent the other drive disk, means connecting the end of the arm on the other side of the 's haftwith saidshifting lever, where, by the raising disk is disengaged from the mi -friction wheel when the screw rises, and

means for throwing said raising disk into -engagement with the friction wheel on the downw'ard'movement of the screw.

10. In a press, a frame, a screw mounted in said frame, a friction wheel fast on said screw and movable therewith, a shaft eX- tending diametrically of said friction wheel adjacent itsuppermost. position, drive disks on said'shaft adapted to engage the edge of said friction wheel, a rock shaft, a lever fast on said. rockshaft for shifting said .drive disk shaft longitudinally to throw said disks into and out ,of engagement with the friction wheel, a swinging brake projecting into the path of movement of the friction wheel and adapted to be engaged by said friction wheel upon upward movement thereof, means connecting said brake ii to said rock shaft to operate the"shifting and out of engagement with the friction in said wheel'by turning the control rod, a hand lever'on said control rod, a slide bar pivotally connected to said lever, spring means for actuating said slide bar to start the press, means for automatically stopping .the press, so and detent means for automatically locking said slide bar in idle position.

12. In a press, a frame, a screw mounted,

'in said frame, a friction wheel on said screw,

drive disks adapted to engage the edge of 35 i said friction wheel, a rotatable control rod,

means connecting said drive disks with said control rod whereby they are shifted into and out of engagement with the friction wheel by turning tlfia control rod. :1 hand lever on said control rod, a slide bar pivotally connected to said lever, sprmg means for actuating said slide bar to start the press, means for automatically stopping the press, detent means for automatically lockingsaid slide bar in idle position, and a foot treadle for releasing said detent means.

13. In a press, a frame, a screw mounted in said frame, a friction wheel on said screw,

drive disks adapted to engage the edge of ldd said friction wheel, a rotatable control rod,- means connecting said drive disks with said control rod whereby they are shifted into and out of engagement with the friction wheel by turning the control rod, a hand lever on said control rod, spring controlled means for actuating said hand lever to'start the press, means for automatically swinging said lever .to stop the press, and detent means l for automatically locking said'spring actuated means inidldposition. i i

14.1w a press, a frame, a screw mounted 5 screw. drive disks adapted to engage the edge of said friction wheel, a rotatable control rode means connecting said drive disks with. said control rod whereby they are shifted into and out of en gagement with the friction wheel by turning the controlv rod, a hand lever on said control rod, spring controlled means for actuating said hand lever to start the ress, means for automatically' swinging sai leyer to stop the press, detent means'for automatically locking said spring actuated means in idle position, and a foot treadle for releasing said detent-means.

15. In a press, a frame, a screw mounted in said frame, a friction wheel on said screwg drive disks adapted to engage the edge 0 said friction Wheel, a rotatable control rod, 136 1 frame,'a frictional wheel on said I wheel by turning the control rod, a hand lever on; saidcontrol rod, spring controlled means-for actuatingsaid hand lever to start I the,, ;press,, andmeans for automatically swinging-saidleversto stop the press, both said last-mentioned meanswhen idle leaving 'the hand lever-free to be manually operated.

in said frame,-.a frictionwhe'el on said s jaw, drive disks adapted'to engage the edgd of said friction .wheel, a rotatable control rod, means connecting said drive disks with said controlrod whereby they are shifted into and out oferi'gage'meht with the friction wheel motion.

y turning the-control rod, a hand lever on ,aidfbontrollrod, a slide bar having a slot andppin connection with said lever, spring meansfor actuating said slide bar to start the press,detent means for automatically locking said-slide bar in idle position so that the lever can manually'oper'ated by virtue of-the slot and pin connection, and means for automatically stopping the downward movement ofthe screw.

17m ns press, afra'me, a screw mountedin .said frame, a, friction wheel on said screw, drive disks adapted to engage the edge of. said friction wheel, a rotatable control rod,,'means connecting said drive disks with said control rod whereby they, are shifte'dintoand out of engagement wit the friction wheel by turning the control rod, a hand lever'on said control rod, a slide bar having a slot and pin connectionwith said lcver','- spring means for actuating said slide bar to start the press,- and detent means for automatically locking said slide bar in idle position so that the lever can be manually operated by virtue of the slot and pincon- 18, In a press, a. frame, a screw mounted in said frame, a friction wheel am said screw, drive-disks adapted to engage theedge of saidfrictionwheel, rotatable control rod, means connecting said drive disks with said control,-1'0d.whereby they are shiftedinto 'anfd out oflengagement with the friction wheel by ,turning'the control rod, a hand lever ons'aid control rod, a slide bar having a slot and pin connection with said lever, spring means for actuating said slide bar to start the press, an adjustable stop on said slide bar, a detent adapted to automatically engage said stop and lock the slide'bar in idle position on the upward movement of the screw, means for automatically reversing the screw on its downward movement, an

- stop.

ineansfrir releasing said detent from said 19. In a press, a frame, a screwmiounted in said frame, a Iriction wheel on-sa-id screw,

1'6.'.In a press, a frame,a screw mounted and means for counteracting sai control rod whereby they are shifted ,into and out of engagement with the friction wheelby turning the control rod, a hand."

leper. on said control rod at the base of the press, a slide bar having bearings in said base and aslot and pin connection with said lever, aspring within the base 'of the press adapted to move said slide bar to start the press,1detent means for automatically lock- I ing said slide bar, in idle position so that the lever ,can be manually operated by virtue of the slot and pinconnection, means for releasing said detent to start the press, and means for automatically' operating said hand lever to reverse the screw on its downward movement.

20. In a press, a frame, a screw mounted in 'said frame, a friction wheel on said screw drive .disks adapted to engage the edge'of "said friction wheel, a rotatable control rod,

means connecting said drive disks with sail control rod whereby they are shifted into and out of'engagement' with the friction wheel by turning the control rod, means for turning said control rod, s ringmeans tending to engage the raising isk-with the friction wheel, brake means adaptedto act in conjunction with said spring-means at the end of the upwardmovement of the screw to throw both drive disks into idle position, means for counteracting said spring means so as to cause the press to reverse at the end of the up movement of the screw, and governing means for throwing said counteracting means into or out of operation as desired. V

21. In apress, a frame,.a screw mounted in said frame, a friction wheel on said screw drive disks adapted to engage the edge 0 said friction wheel, a rotatable control rod,

junction with said spring means at the end of the upward movement of the screw to throw both drive disks; into idle (position,

spring means so as to cause the press to reverse at the end of the up stroke of the hammer.

22. In a press, a frame, a vscrew 'mounted in, said -frame,-a frictlon wheel on said screw, drive disks adapted to engage the 1,11s1,s4is' 4 means tending to engage the raising disk with the friction ,wheel, means adapted to act in conjunction with said spring ,means at the end of the upward movement .of the screw to throw both drive disks into idle positionfand means for braking the turning of said control rod so as to counteract said spring means and cause the press to reverse at the end of the-upward movement of the friction wheel, means adapted to act inconward movement of the screw to throw both junction with said spring means on the updrive" .disks into idle position, means for braking the turning of said control rod so as to counteract said spring means, and a and out of engagement. i

2-1. In a press, a frame, a screw mounted in said frame, a friction wheel on said cam for throwing said braking means into screw, drive disks adapted to engage the edge of said friction wheel, a rotatable control rod, means connecting said drive disks to said control rod whereby they are shifted into and out of engagement with the friction wheel by turning the control rod, means for turning said control rod, spring means tending to engage the'raising disk with the v friction wheel, means adapted on upward movement of the screw to throw the raising disk out of and the lowering disk into contact with the friction wheel, a drumon said control rod, a brake band for said drum, and means for engaging and releasing said brake band and drum.

In a press, a frame, a screw mounted in said frame, a friction wheel on said scre\\',-drivc disks adapted to engage the edge of said friction wheel, a rotatable control rod, means connecting said drive disks to said control rod whereby they are shifted into and out of engagement with the "friction. whee, by turning the control rod, means for turning said control rod, spring means tending to engage the raising disk with the friction wheel, means adapted on the upward movement of the screw to throw the raising disk out of and the lowering disk into contact with the friction'wheel, aidrum on said control rod brake band for said drum having radially disposed adjacent cars, a bolt through said adjusting nuts on one end said bolt, and a handle cam' at the other end-of said bolt for clamping the brake band and releasing it.

26. In a press, a frame, a screw mounted in said frame, a friction wheel on said screw, drive disks, adapted to engage the edgeof said friction wheel, a rotatable control rod upright in the frame, means connecting said drive disks to said control rod whereby they are shifted into and out of engagement with the friction wheel by turning the control rod, means for turning saidcontrol rod, spring meanstending to engage the raising disk with the friction wheel, means adapted on the upward move ment ofjthe screw to throw the raising disk out of. and the lowering disk into contact with the friction wheel, a drum on said control rod beneath the base of the frame, a brake band for said drum mounted upon the frame, and means for tightening and loos- .-ening said brake band.

27. In a press, a frame" providing a bed for a lower die, ahamm'e r adapted to carry an upper die, means for raising and lowerving said hammer, knock-out means on the base of said frame for dislodging the work from the lower die, a trip rod ektending upward from said knock-out means with an outwardly inclined upper end portion extending througha slidewa'y on the top of the frame, and a trip on said trip rod adapted to be engaged by the hammer on its upward movement to slide said rod upward.

28. In a press, aframe providing a bed for alower die, a hammer adapted to carry an upper die, means for raising'and lowering said hammer, knock-out means, on the base of said frame for dislodging work from the lower.die, a trip rod extending upward from said knock-out means "it, one side of the press, guide means for said trip rod on the topof the frame adapted to swing its-upper e'nd outward as it rises, and a trip on said trip rod adapted to be engaged by the hammer on its upward movement to raise said rod.

' .29. In a p'rcss, a frame, a screw mounted in said frame, a friction wheel fast on said screw and movable therewith, a shaftextending diametrically of said friction wheel adjacent its uppermost position, drive disks on said shaft adapted to engage the edge of said friction wheel, key means between each of saiddrive disks-and the shaft, and a lock nut on said. shaft at the opposite side of each drive disk from the friction wheel. I

EDMUND wQzEH. Witnesses i owano P. KIXG, MILDRED E. BnooKs.- 

